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US 12,120,350 B2Granted
Encoding device, decoding device, and program
AssigneeNippon Hoso Kyokai
InventorsAtsuro Ichigaya, Shunsuke Iwamura, Shimpei Nemoto, Kazuhisa Iguchi
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AssigneeNippon Hoso Kyokai
InventorsAtsuro Ichigaya, Shunsuke Iwamura, Shimpei Nemoto, Kazuhisa Iguchi
Estimating the term…
An encoding device 1 includes: a transformer 13 configured to calculate an orthogonal transform coefficient by performing an orthogonal transformation process on a residual image indicating a difference between the input image and a predicted image of the input image; a quantizer 14 configured to generate quantization coefficient by quantizing the orthogonal transform coefficient based on a quantization parameter; an entropy encoder 24 configured to generate encoded data by encoding the quantization coefficient; an image decoder 10 configured to restore an orthogonal transform coefficient from the quantization coefficient based on the quantization parameter and generate a pre-filtering image by adding the predicted image to a residual image restored by performing inverse orthogonal transformation on the orthogonal transform coefficient; and a deblocking filter 18 configured to perform a filtering process on the pre-filtering image and control a filtering strength depending on a result of comparison between a luminance signal level of the pre-filtering image and a luminance threshold value.
A decoding device performing a decoding process on encoded data, the decoding device comprising:
An encoding device comprising:
A non-transitory computer-readable recording medium in which a data structure of encoding data is stored, the data structure of the encoding data comprising:
Dependencies are inferred from the claim text.